This new iPhone 5 concrete skin by Korean design company Posh-Craft, doesn’t just look pretty awesome, it actually also ads an extra layer of protection to your smart phone.

Surprisingly enough, as the ‘Luna Concrete Case’ looks very heavy and could harm your phone before protecting it, the case it's "cast" in made out of flexible concrete, making it thin, durable, protective and pocket-friendly. It sticks to the back of the iPhone and sports a gridded series of dots positioned directly over where the Apple logo would normally be displayed. The texture is smooth, embellished with chalky imperfections and broken up by small circular depressions that, no doubt, create a nice texture to hold.

The scratchy, crater-riven concrete resembles the lunar surface. The patterns will vary from case to case, the designers write, so that each skin will have its own unique set of moon markings.

The designers said to have stumbled upon the idea during a spring-cleaning session. Amid piles of papers, they found a printed scan of concrete that magnified the material’s entrancing otherworldly qualities. They made the immediate connection or “leap” to the moon, and set off on prototyping the design. It took many tries before getting it just right. The final product, on sale later this month, will have the "refined attraction and [be in] perfect harmony with the clean and modern look of the iPhone."

The “Luna” skin is available through Post Craft’s online store, but currently sold out. Check back for a restock in the near future.